A social network game is a type of online game that is played through social networks, and typically features multiplayer and asynchronous gameplay mechanics. Social network games are most often implemented as browser games, but can also be implemented on other platforms such as mobile devices. They are amongst the most popular games played in the world, with several products with tens of millions of players. (Lil) Green Patch, Happy Farm, Farm Town, YoVille and Mob Wars were some of the first successful games of this genre. FrontierVille, CityVille, Gardens of Time and The Sims Social are more recent examples of very popular social network games.